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Expired Canadian patentCanada

Low shear inversion process and products thereof

CA 2015448 C · Owner: Cain, Frederick William · Inventors: Cain, Frederick William; De Wit, Jim

CIPO record

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Abstract From the Canadian patent

It is an object of the present invention to provide a reduced fat butter which is butter-like without being cheese-spread like. In particular, the invention aims to provide a 55-65% butter-fat based spread with a butter-like texture using a simple process of low shear inversion. The additional problems faced include avoiding the high levels of caseinate previously found necessary for inversion and avoiding the costly 16 hr ripening step previously required. A reduced fat butter which has a good butter-like texture by inversion of a concentrated cream in the form of a partially crystallised viscous paste. In particular, by phase inversion under conditions of low shear of a cream comprising …

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Listed from its CIPO record in Patent Yard's archive of Canadian patents past their term. Its claims, description and drawings are in the CIPO record and on Google Patents, and the Claude kit works from them.

Why it's free to use

  • Filed April 25, 1990 and granted December 11, 2001. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended April 25, 2010.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 25, 2012.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledApril 25, 1990
GrantedDecember 11, 2001
Term endedApril 25, 2010
Patent numberCA 2015448 C
Classification (IPC)A23C15/16 +2 more

Timeline

Timeline From CIPO dates

1991199319951997199920012003200520072009Application filedApril 25, 1990Patent grantedDec 11, 2001Term endedApril 25, 2010

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Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.